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Bustamite
Bustamite

Erythrite
Erythrite



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Bustamite
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Erythrite

Bustamite and Erythrite Physical Properties

Physical Properties

Tenacity

-
Sectile

Solubility

Partly soluble in HCl.
-

Durability

-
-

Specific Gravity

3.32-3.433.06
1 7.18
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Fracture

Conchoidal
Sectile

Cleavage

{100} perfect; {110} and {1 1 0} good; {010} poor
Perfect on {010}; poor on {100} and { 1 02}.

Mohs Hardness

5.5-6-9999
2 10
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Chemical Composition

(Ca,Mn2+ )Si 3O 9Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
Co3(AsO4)2•8(H2O)

Bustamite and Erythrite Chemical Formula

While comparing Bustamite and Erythrite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Bustamite and Erythrite chemical formula.

  • Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)

Bustamite and Erythrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bustamite and Erythrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bustamite and Erythrite Optical Properties during the identification of gemstone. Specific gravity of Bustamite is 3.06 whereas that of Erythrite is 3.06.